| Predictor | n | OR (CI) | p Value |
| Systolic blood pressure <90 mm Hg | 187 | 5.6 (3.4 to 9.3) | <0.0001 |
| Diastolic blood pressure ⩽60 mm Hg | 282 | 1.9 (1.2 to 3.0) | 0.006 |
| Mean arterial pressure <70 mm Hg | 259 | 3.1 (2.0 to 5.0) | <0.0001 |
| Pulse pressure ⩽40 mm Hg | 240 | 1.9 (1.2 to 3.1) | 0.005 |